Competition cautions are no big deal, IMO. Grippy tires that wear out during a full fuel stint are considered a good thing for the quality of racing. Goodyear is asked to provide tires as soft and grippy as possible, tires that "fall off" over a full stint.
It is my understanding that tire wear is considerably higher on a green track, where rain has washed off the rubber laid down during practice. If this is true, blown tires would be expected during a full length first stint on a green track. Goodyear's inevitable response would be to bring a harder, more durable tire to avoid tire-related problems when the race starts on a green track. The competition caution shortens the first stint, the period of highest tire wear.